Diagnosis first
We check symptoms, fault codes, airflow clues, and engine suitability before recommending walnut blasting.
Walnut blasting carbon cleaning
Carbon build up cleared properly, not disguised.
A focused intake cleaning service for modern direct injection engines suffering from rough idle, misfires, hesitation, poor economy, and restricted airflow.
- For
- DI petrol and diesel
- Cleans
- Intake valves and ports
- Coverage
- Wales and beyond
The problem
Carbon build up can choke an engine long before a part has failed.
Direct injection engines do not wash the back of the intake valves with fuel. Oil vapour, EGR soot, and crankcase deposits bake onto the valves and intake ports, slowly reducing airflow and upsetting combustion.
Walnut blasting removes the hard carbon deposits from the intake tract using crushed walnut shell media. It is abrasive enough to clean carbon, but soft enough to be used correctly around engine components.
Common symptoms
- Rough idle or cold-start shaking
- Flat spots, hesitation, or poor throttle response
- Misfire fault codes such as P0300 to P0308
- Loss of power at low and mid range rpm
- Poor fuel economy and increased smoke
- EGR, airflow, MAP, or MAF related faults
Before and after
A mechanical clean for a mechanical restriction.
Chemical treatments can help light deposits in some situations, but heavy intake valve carbon usually needs direct physical removal.
The service
What happens during walnut blasting?
Intake access
The intake manifold is removed as required so the valve ports can be reached and isolated correctly.
Walnut media clean
Crushed walnut shell media is blasted into the port and extracted with the loosened carbon deposits.
Rebuild and check
The intake is refitted, the vehicle is checked, and any related issues are reported clearly.
Find your service
Focused help for the searches people actually make.
Choose the service, vehicle type, or coverage area that matches your carbon build up issue.
Vehicle coverage
Built for engines known for intake carbon build up.
We work with many direct injection platforms where carbon deposits are a known cause of drivability problems.
BMW and MINI
N43, N53, N54, N55, B48, B58, N14, N18 and related direct injection engines.
BMW walnut blastingAudi, VW, Seat, Skoda
TFSI, FSI, TDI, EA113, EA888, 2.0 TFSI, 3.0 TFSI, performance and daily driver models.
Audi and VW walnut blastingFord EcoBoost
Fiesta ST, Focus ST, Focus RS, Mustang EcoBoost and other direct injection applications.
Mazda Skyactiv
Skyactiv-D diesels and Skyactiv-G petrol engines, including Mazda 3, Mazda 6 and CX models affected by intake carbon build up.
Mazda Skyactiv carbon cleaningJaguar Land Rover
Ingenium petrol and diesel engines, TDV6, SDV6 and intake systems affected by soot and oil deposits.
Mercedes-Benz
Direct injection petrol and diesel engines including common C-Class, E-Class, AMG and OM diesel platforms.
Peugeot, Citroen, Vauxhall
THP, turbo direct injection petrol, HDi and CDTi engines with intake or EGR related carbon issues.
Coverage
Walnut blasting support across Wales and nearby regions.
We help customers from Wales, the West Midlands, the South West, and the Home Counties with carbon build up diagnosis and walnut blasting bookings.
For customers further away, we can arrange vehicle collection and drop off so the job can be handled without a long day of travel.
Wales
West Midlands
South West
Home Counties
Collection available
Drop off available
Fault codes
Codes that can point toward carbon build up.
Fault codes do not prove carbon build up on their own, but these codes often appear when restricted intake airflow, misfires, EGR faults, or boost control issues are present.
P0300
P0301
P0302
P0303
P0304
P0101
P0068
P0401
P0402
P0299
P0171
P0506
Book in
Think carbon build up is holding your car back?
Send the registration, engine, symptoms, and any fault codes. We will tell you whether walnut blasting is the right next step.